<template>
  <div class="cart">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <ul class="cart-list" v-for="cart in getcartList" :key="cart.id">
          <li class="cart-list-con1">
            <input
              type="checkbox"
              :checked="cart.isChecked"
              name="chk_list"
              @change="changechecked(cart, $event)"
            />
          </li>
          <li class="cart-list-con2">
            <img :src="cart.imgUrl" />
            <div class="item-msg">
              {{ cart.skuName }}
            </div>
          </li>
          <li class="cart-list-con3">
            <div class="item-txt">语音升级款</div>
          </li>
          <li class="cart-list-con4">
            <span class="price">{{ cart.skuPrice }}.00</span>
          </li>
          <li class="cart-list-con5">
            <a href="javascript:void(0)" class="mins" @click="hander(cart, '0')"
              >-</a
            >
            <input
              autocomplete="off"
              type="text"
              minnum="1"
              class="itxt"
              :value="cart.skuNum"
              @change="hander(cart, '1', $event)"
            />
            <a href="javascript:void(0)" class="plus" @click="hander(cart, '2')"
              >+</a
            >
          </li>
          <li class="cart-list-con6">
            <span class="sum">{{ cart.skuPrice * cart.skuNum }}.00</span>
          </li>
          <li class="cart-list-con7">
            <a href="#none" class="sindelet" @click="remcart(cart)">删除</a>
            <br />
            <a href="#none">移到收藏</a>
          </li>
        </ul>
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input
          class="chooseAll"
          type="checkbox"
          :checked="isAllChecked"
          @change="isAllcheckedchange"
        />
        <span>全选</span>
      </div>
      <div class="option">
        <a href="#none" @click="changeRem">删除选中的商品</a>
        <a href="#none">移到我的关注</a>
        <a href="#none">清除下柜商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">已选择 <span>0</span>件商品</div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{ Picker }}.00</i>
        </div>
        <div class="sumbtn" @click="jiesuan">
          <a class="sum-btn" href="javadrcipt:;">结算</a>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { mapGetters } from "vuex";
export default {
  name: "ShopCart",
  created() {
    this.throttledFunction = null;
  },
  mounted() {
    this.getData();
  },
  methods: {
    // 购物车数据
    getData() {
      this.$store.dispatch("discartlist");
    },
    // 购物车数量加减以及中间选
    async hander(cart, e, event) {
      // 0 减操作 1 input输入 2 加操作
      let count = 0;
      if (e == 0) {
        count = cart.skuNum > 1 ? -1 : 0;
      } else if (e == 1) {
        let value = event.target.value * 1;
        if (isNaN(value) || value < 1) {
          count = 0;
        } else {
          count = parseInt(value) - cart.skuNum;
          console.log(count, "==");
        }
      } else {
        count = 1;
      }

      // 定义节流函数
      if (this.throttledFunction) {
        clearTimeout(this.throttledFunction);
      }
      this.throttledFunction = setTimeout(async () => {
        try {
          await this.$store.dispatch("disaddshopping", {
            skuId: cart.skuId,
            skuNum: count,
          });
          this.getData();
        } catch {}
      }, 500);
    },
    // 删除购物车
    async remcart(cart) {
      try {
        await this.$store.dispatch("disremcartlist", cart.skuId);
        this.getData();
      } catch (error) {
        alert("删除失败");
      }
    },
    // 修改某一个购物车的checked状态
    async changechecked(cart, e) {
      try {
        let value = e.target.checked ? "1" : "0";
        await this.$store.dispatch("disreqchecked", {
          skuId: cart.skuId,
          isChecked: value,
        });
        this.getData();
      } catch (err) {
        alert(err);
      }
    },
    // 删除选中的商品
    changeRem() {
      // 获取选中的对象
      let result = this.getcartList.filter((item) => item.isChecked == "1");
      let promises = [];
      for (const k in result) {
        promises.push(this.$store.dispatch("disremcartlist", result[k].skuId));
      }
      Promise.all(promises).then(() => {
        this.getData();
      });
    },
    // 点击全选让所有商品选中
    isAllcheckedchange(e) {
      const promises = [];
      const isChecked = e.target.checked ? 1 : 0;
      let result = this.getcartList.filter((item) => item.isChecked != "1");
      if (isChecked === 1) {
        for (const k in result) {
          promises.push(
            this.$store.dispatch("disreqchecked", {
              skuId: result[k].skuId,
              isChecked: 1,
            })
          );
        }
      } else {
        for (const k in this.getcartList) {
          const skuId = this.getcartList[k].skuId;
          promises.push(
            this.$store.dispatch("disreqchecked", { skuId, isChecked: 0 })
          );
        }
      }
      Promise.all(promises).then(() => {
        this.getData();
      });
    },
    // 跳转支付页
    jiesuan() {
      this.$router.push("/Trade");
    },
  },
  computed: {
    ...mapGetters(["getcartList"]),
    // 计算总价
     Picker() {
      let sum = 0;
      let data =  this.getcartList.filter((item) => {
        return item.isChecked == 1; 
      });
      data.map((item) => {
        sum += item.skuPrice * item.skuNum;
      });
      console.log(sum);
      return sum;
    },
    // 判断全选 选中的复选框
    isAllChecked() {
      return this.getcartList.every((item) => item.isChecked == "1");
    },
  },
};
</script>

<style lang="less" scoped>
.cart {
  width: 1200px;
  margin: 0 auto;

  h4 {
    margin: 9px 0;
    font-size: 14px;
    line-height: 21px;
  }

  .cart-main {
    .cart-th {
      background: #f5f5f5;
      border: 1px solid #ddd;
      padding: 10px;
      overflow: hidden;

      & > div {
        float: left;
      }

      .cart-th1 {
        width: 25%;

        input {
          vertical-align: middle;
        }

        span {
          vertical-align: middle;
        }
      }

      .cart-th2 {
        width: 25%;
      }

      .cart-th3,
      .cart-th4,
      .cart-th5,
      .cart-th6 {
        width: 12.5%;
      }
    }

    .cart-body {
      margin: 15px 0;
      border: 1px solid #ddd;

      .cart-list {
        padding: 10px;
        border-bottom: 1px solid #ddd;
        overflow: hidden;

        & > li {
          float: left;
        }

        .cart-list-con1 {
          width: 4.1667%;
        }

        .cart-list-con2 {
          width: 25%;

          img {
            width: 82px;
            height: 82px;
            float: left;
          }

          .item-msg {
            float: left;
            width: 150px;
            margin: 0 10px;
            line-height: 18px;
          }
        }

        .cart-list-con3 {
          width: 20.8333%;

          .item-txt {
            text-align: center;
          }
        }

        .cart-list-con4 {
          width: 12.5%;
        }

        .cart-list-con5 {
          width: 12.5%;

          .mins {
            border: 1px solid #ddd;
            border-right: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }

          input {
            border: 1px solid #ddd;
            width: 40px;
            height: 33px;
            float: left;
            text-align: center;
            font-size: 14px;
          }

          .plus {
            border: 1px solid #ddd;
            border-left: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }
        }

        .cart-list-con6 {
          width: 12.5%;

          .sum {
            font-size: 16px;
          }
        }

        .cart-list-con7 {
          width: 12.5%;

          a {
            color: #666;
          }
        }
      }
    }
  }

  .cart-tool {
    overflow: hidden;
    border: 1px solid #ddd;

    .select-all {
      padding: 10px;
      overflow: hidden;
      float: left;

      span {
        vertical-align: middle;
      }

      input {
        vertical-align: middle;
      }
    }

    .option {
      padding: 10px;
      overflow: hidden;
      float: left;

      a {
        float: left;
        padding: 0 10px;
        color: #666;
      }
    }

    .money-box {
      float: right;

      .chosed {
        line-height: 26px;
        float: left;
        padding: 0 10px;
      }

      .sumprice {
        width: 200px;
        line-height: 22px;
        float: left;
        padding: 0 10px;

        .summoney {
          color: #c81623;
          font-size: 16px;
        }
      }

      .sumbtn {
        float: right;

        a {
          display: block;
          position: relative;
          width: 96px;
          height: 52px;
          line-height: 52px;
          color: #fff;
          text-align: center;
          font-size: 18px;
          font-family: "Microsoft YaHei";
          background: #e1251b;
          overflow: hidden;
        }
      }
    }
  }
}
</style>